Study on Anti-tumor Chemical Constituents from Pericarps of Juglans mandshurica
Objective:To study the anti-tumor chemical components of the pericarps of Juglans mandshurica.Methods:The chemical constituents were isolated and purified by AB-8 macroporous adsorption resin,silica gel,Sephadex LH-20 columns and recrystallization.The structures were elucidated on the basis of physicochemical properties and NMR spectral data analysis.Results:From the pericarps of Juglans mandshurica,twelve compounds were separated and identified as 3-methoxy j uglone (1),3-ethoxy j uglone (2),1,8-dihydroxy anthraquinone (3),juglone (4),2α,3α,19α-trihydroxy ursolic acid (5),1 α,3β-dihydroxy-olean-18-ene (6),methyl gallate (7),pterocarine (8),quercetin (9),kaempferol (10),daucosterol (11),and β-sitosterol (12).Conclusion:Compounds 1 ~ 3 and 6 are isolated from the pericarps of Juglans mandshurica for the first time.Compounds 5 and 7 are isolated from Juglans genus for the first time.
Pericarps of Juglans mandshurica Maxim.Chemical constituentsStructure identification